Video on demand (display) (VOD) are systems which allow users to select and watch/listen to video or audio content such as movies and TV shows when they choose to, rather than having to watch at a specific broadcast time, which was the prevalent approach with over-the-air broadcasting during much of the 20th century.
Simple machines are used to make work easier. They are used in various places and times in our lives. They include: the pulley, screw, wheel and axle, wedge, lever, and the inclined plane. Compound machines are made up of two or more simple machines. Materials Activity 1: Discovering Simple Machines Parents bring simple machines that they will demonstrate for students such as pliers, hammers, screwdrivers, wrenches, wire cutters, small crowbars, scissors, saws, garden tools,
Simple Machines Crossword Puzzle Across 1. tool with two levers attached together for cutting paper 5. wheel and axle device that is turned when you open a door 6. wedge used for cutting food 8. fixed point on a lever that doesn't move 10. number of different types of simple machines 11. type of simple machine that is made of a wheel with a rope or chain 13.